Structure 17862 · Lewis County, MO

County RD 504 over Mid Fabius Rvr

Carries County RD 504 over Mid Fabius Rvr, S 24 T 61 N R 8 W.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT149 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 5/9

149 ft end to end: about 2 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built1920106 years old
Length149.0 ft45.4 m
Daily traffic35counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateMissouri
CountyLewis
LocationS 24 T 61 N R 8 W
CarriesCounty RD 504
CrossesMid Fabius Rvr
Coordinates40.07128, -91.74475

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length149.0 ft (45.4 m)
Max Span97.4 ft (29.7 m)
Deck Width12.1 ft (3.7 m)
Deck Area168.0 sq m
Main Spans1
Year Built1920

Traffic

Avg Daily Traffic35 (2024)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number17862

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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